/*
 * Copyright 2010 the original author or authors.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package org.springframework.templating;

/**
 * Package-private helper that delegates to org.antlr.stringtemplate as the actual StringTemplate implementation.
 * Encapsulates the dependency on Terrence Parr's StringTemplate implementation.
 * @author Keith Donald
 */
class DelegatingStringTemplate implements StringTemplate {

	private org.antlr.stringtemplate.StringTemplate delegate;

	public DelegatingStringTemplate(org.antlr.stringtemplate.StringTemplate delegate) {
		this.delegate = delegate;
	}

	public void put(String name, Object value) {
		delegate.removeAttribute(name);
		delegate.setAttribute(name, value);
	}

	public String render() {
		return delegate.toString();
	}
	
}